Sudden loss of brakes and brake fluid pouring out of front driver wheel area

It sounds as if you have burst a flexible brake hose. The best way to check is to wash down all the leaking brake fluid and let it dry, then top up the master cylinder and watch the hose while someone pumps the brakes. If the hose has failed, you will see the fluid leaking. If this is the case, do not drive the car as you will have no brakes after a few applications at best, repair on site or tow to the nearest workshop for the repair. If you want to do the repair please let me know and I will talk you through the process, you will need some understanding of what you need to do and also access to tools for the job.